Title :
New electrode for measuring precise high-field dielectric properties of polymeric films
Author :
Tohyama, Kazuyuki ; Nagao, Masayuki ; Kosaki, Masamitsu
Author_Institution :
Dept. of Electron. & Control Eng., Numazu Coll. of Technol., Japan
Abstract :
A novel electrode system in which the electric-field disturbance around the main electrode edge is minimized by using a guard film has been proposed. This novel electrode system for measuring the precise high-field dielectric properties of polymeric films was evaluated from measurements of capacity and electric-field analyses. The high field tan δ of LDPE (low-density polyethylene) was measured in the new electrode system. The electric field around the main electrode edge was simulated by the finite-element method. In the new electrode system, the disturbance of the electric field around the main electrode edge was significantly eliminated. Capacity was estimated from the results of the electric-field analyses according to Gauss´ theorem. Capacitance measured by the electrode systems indicated a 3% decrease of the edge effect in the new electrode system as compared to the conventional three-terminal electrode system
Keywords :
dielectric loss measurement; dielectric measurement; finite element analysis; loss-angle measurement; polymer films; Gauss´ theorem; LDPE; electric-field disturbance; electrode system; finite-element method; high-field dielectric properties; polymeric films; tan delta; Chemical technology; Dielectric losses; Dielectric measurements; Dielectrics and electrical insulation; Electrodes; Epoxy resins; Permittivity measurement; Plastic films; Polyethylene; Polymer films;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172293
